One cell, first memory
The first pressure-memory layer, prototyped in a single cell.
Before this, the LED reacted directly to the latest light reading. Now there is one PressureCell between sensing and expression. It holds two values: pressure, which rises with change and decays fast, and structure, which shifts very slowly when the cell is pressured again and again.
Fast state and slow identity, in one cell. It is a prototype of the whole brain idea, at the smallest possible size.